build: add waf-tool to simplify building with AddressSanitizer & friends

Change-Id: If36e52f5e49d94ad5846165c50504d06d7d3c4d0
Refs: #2589
diff --git a/tests/wscript b/tests/wscript
index 9515055..4f7301f 100644
--- a/tests/wscript
+++ b/tests/wscript
@@ -11,5 +11,4 @@
         use=['core-objects'] + ['%s-objects' % tool for tool in bld.env['BUILD_TOOLS']],
         headers='../common.hpp boost-test.hpp',
         install_path=None,
-        defines='TMP_TESTS_PATH=\"%s/tmp-tests\"' % bld.bldnode,
-        )
+        defines='TMP_TESTS_PATH=\"%s/tmp-tests\"' % bld.bldnode)